Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bf2f9a69b283288ecc8c68502feffc7be3b2b07af0ca7e5826e2cdfbef40088' 
  AND token = 'VTf8zU8ZbDE2vHgKNNo2edhKjtv8OnnP6GyttTn1NVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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