Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72a423124d375d02b2d1ed4ea147d306460759f8648f595b4ecf238211a5d107' 
  AND token = 'ZBynuvyWd4YBnGeIWSotIJgRjb7higeRP9Yn2yxBrko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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