Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d5e04e0772c42e2d9344a4f9a80ba203af0d32625548862298a20c32cceee2a' 
  AND token = 'fJw8mADBkUSknCrEcAlBVBX0HUR63QMnOv7SU+Y6+Rg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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