Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2ddf86f70019e482ac2cf8c2879e8cff8d5a4795138d6eeeb02dffaa258c06f' 
  AND token = 'PabIkD82cxh61SY0fiXD1BLBDt23KiXsCEhLatpig5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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