Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4fc47ba70f2720a9cadc7b3143007b06ecd205c247de94eae2f01067043f43a' 
  AND token = 'M9iNrMqYoXVaBz2e17ZKbtRaJZGprTINAYxYA1g4qJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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