Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8239fd04c36f10c1953fcfb0a4aa9211705ca5575256e207fe4540f428aa988' 
  AND token = '3lm+k3U6mg9EQuwT+37lhbdePMQ9Rqmj9zjX94r8ONU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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