SELECT 
  cscart_bm_snapping.grid_id as grid_id, 
  cscart_bm_snapping.block_id as block_id, 
  IFNULL(
    dynamic_object_content.content, 
    default_content.content
  ) as content, 
  IFNULL(
    dynamic_object_content.object_id, 
    default_content.object_id
  ) AS object_id, 
  IFNULL(
    dynamic_object_content.object_type, 
    default_content.object_type
  ) AS object_type, 
  cscart_bm_block_statuses.object_ids as object_ids, 
  cscart_bm_snapping.*, 
  cscart_bm_blocks.*, 
  cscart_bm_blocks_descriptions.* 
FROM 
  cscart_bm_snapping 
  LEFT JOIN cscart_bm_blocks ON cscart_bm_blocks.block_id = cscart_bm_snapping.block_id 
  LEFT JOIN cscart_bm_block_statuses ON cscart_bm_snapping.snapping_id = cscart_bm_block_statuses.snapping_id 
  AND cscart_bm_block_statuses.object_type LIKE '' 
  LEFT JOIN cscart_bm_blocks_descriptions ON cscart_bm_blocks.block_id = cscart_bm_blocks_descriptions.block_id 
  LEFT JOIN cscart_bm_blocks_content AS default_content ON cscart_bm_blocks.block_id = default_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = default_content.lang_code 
  AND default_content.snapping_id = 0 
  AND default_content.object_id = 0 
  AND default_content.object_type like '' 
  LEFT JOIN cscart_bm_blocks_content AS dynamic_object_content ON cscart_bm_blocks.block_id = dynamic_object_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = dynamic_object_content.lang_code 
  AND dynamic_object_content.object_id = 0 
  AND dynamic_object_content.object_type like '' 
WHERE 
  cscart_bm_snapping.grid_id IN (
    842, 843, 844, 845, 846, 847, 848, 849, 
    850, 851, 862, 865, 866, 868, 869, 870, 
    879, 1272, 1280, 1284, 1288, 1292, 1297, 
    1344, 880, 1255, 1281, 1285, 1289, 1293, 
    1345, 863, 1253, 1256, 1282, 1286, 1290, 
    1294, 1346, 1257, 864, 1258, 1259, 1279, 
    1260, 1261, 1295, 1262, 1263, 1283, 
    1264, 1265, 1343, 1266, 1267, 871, 1268, 
    1269, 1287, 1270, 867, 872, 874, 1273, 
    873, 1254, 875, 876, 877, 1296, 878, 
    1291, 1274, 1347, 1348, 1353, 1352, 
    1349, 1354, 1350, 1351, 1356, 1355
  ) 
  AND cscart_bm_blocks_descriptions.lang_code = 'en' 
ORDER BY 
  cscart_bm_snapping.order, 
  cscart_bm_snapping.block_id

Query time 0.00565

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "56337.66"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "41265.00"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_bm_snapping",
            "access_type": "range",
            "possible_keys": [
              "grid_id"
            ],
            "key": "grid_id",
            "used_key_parts": [
              "grid_id"
            ],
            "key_length": "4",
            "rows_examined_per_scan": 131,
            "rows_produced_per_join": 131,
            "filtered": "100.00",
            "index_condition": "(`s2cart`.`cscart_bm_snapping`.`grid_id` in (842,843,844,845,846,847,848,849,850,851,862,865,866,868,869,870,879,1272,1280,1284,1288,1292,1297,1344,880,1255,1281,1285,1289,1293,1345,863,1253,1256,1282,1286,1290,1294,1346,1257,864,1258,1259,1279,1260,1261,1295,1262,1263,1283,1264,1265,1343,1266,1267,871,1268,1269,1287,1270,867,872,874,1273,873,1254,875,876,877,1296,878,1291,1274,1347,1348,1353,1352,1349,1354,1350,1351,1356,1355))",
            "cost_info": {
              "read_cost": "66.61",
              "eval_cost": "13.10",
              "prefix_cost": "79.71",
              "data_read_per_join": "101K"
            },
            "used_columns": [
              "snapping_id",
              "block_id",
              "grid_id",
              "wrapper",
              "user_class",
              "order",
              "status"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_block_statuses",
            "access_type": "ref",
            "possible_keys": [
              "snapping_id"
            ],
            "key": "snapping_id",
            "used_key_parts": [
              "snapping_id"
            ],
            "key_length": "4",
            "ref": [
              "s2cart.cscart_bm_snapping.snapping_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 131,
            "filtered": "100.00",
            "index_condition": "<if>(is_not_null_compl(cscart_bm_block_statuses), ((`s2cart`.`cscart_bm_snapping`.`snapping_id` = `s2cart`.`cscart_bm_block_statuses`.`snapping_id`) and (`s2cart`.`cscart_bm_block_statuses`.`object_type` like '')), true)",
            "cost_info": {
              "read_cost": "32.75",
              "eval_cost": "13.10",
              "prefix_cost": "125.56",
              "data_read_per_join": "15K"
            },
            "used_columns": [
              "snapping_id",
              "object_ids",
              "object_type"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "s2cart.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 131,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "32.75",
              "eval_cost": "13.10",
              "prefix_cost": "171.41",
              "data_read_per_join": "28K"
            },
            "used_columns": [
              "block_id",
              "type",
              "properties",
              "company_id",
              "storefront_id"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "lang_code"
            ],
            "key_length": "10",
            "ref": [
              "s2cart.cscart_bm_snapping.block_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 131,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "32.75",
              "eval_cost": "13.10",
              "prefix_cost": "217.26",
              "data_read_per_join": "26K"
            },
            "used_columns": [
              "block_id",
              "lang_code",
              "name"
            ]
          }
        },
        {
          "table": {
            "table_name": "default_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "snapping_id",
              "lang_code",
              "object_id"
            ],
            "key_length": "18",
            "ref": [
              "s2cart.cscart_bm_snapping.block_id",
              "const",
              "s2cart.cscart_bm_blocks_descriptions.lang_code",
              "const"
            ],
            "rows_examined_per_scan": 9,
            "rows_produced_per_join": 1179,
            "filtered": "100.00",
            "index_condition": "<if>(is_not_null_compl(default_content), (`s2cart`.`default_content`.`object_type` like ''), true)",
            "cost_info": {
              "read_cost": "294.75",
              "eval_cost": "117.90",
              "prefix_cost": "629.91",
              "data_read_per_join": "257K"
            },
            "used_columns": [
              "snapping_id",
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ]
          }
        },
        {
          "table": {
            "table_name": "dynamic_object_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "s2cart.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 35,
            "rows_produced_per_join": 41265,
            "filtered": "100.00",
            "index_condition": "<if>(is_not_null_compl(dynamic_object_content), ((`s2cart`.`dynamic_object_content`.`object_id` = 0) and (`s2cart`.`dynamic_object_content`.`lang_code` = `s2cart`.`cscart_bm_blocks_descriptions`.`lang_code`) and (`s2cart`.`dynamic_object_content`.`object_type` like '')), true)",
            "cost_info": {
              "read_cost": "10316.25",
              "eval_cost": "4126.50",
              "prefix_cost": "15072.66",
              "data_read_per_join": "8M"
            },
            "used_columns": [
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ]
          }
        }
      ]
    }
  }
}