Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb265d4f734c0de0551140d114e2619b942125c11c54b9e6ca5c7ccdf337e2b1' 
  AND token = 'U1CvZcyHIqyqyYlwp8PgwQyyrQsxwD0OibfOdhkvruM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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