Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b445ca5ce778a4a7cfc3192085978a0c61bda321bfbe2b93b814847571c72bf' 
  AND token = 'joNgsGJewzXRMbWUit0hRLC0D4zXVM+0cm6DXGZj560=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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