Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0198c9b06c572eec3966b0fdcef77d824c2386e821304633c95b56806cd83c3f' 
  AND token = 'uFWQWZ21RaVR9lYUemUHTphI6cGyjXnQQKCyD0eaMf0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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