Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b80cbf79aab9c597244cdf2e1857f9953472bff6d2324503083a099aba24d65' 
  AND token = '+De2kqOkFIXOCy9hGv/dBa1QHFll8px30DsMaReTm0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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