Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1791ccd4297e524a2065c533c5eb9d44f075fb891ed6e79022059e9e9233cd72' 
  AND token = 'rIJfiSO8jcnkB3zwPhz9F8VkGQACpWymq2JiCh5ScLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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