Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0bffc1c64ca90f24a85e12f74f3d1f278986598ceec47101fe25c51253fe4d9' 
  AND token = '96hGIFKApMn10KgrToOmoUC5f9jL6lvrwgxhzfIwHZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}