Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28062f397d6fc2a06fec677f02ad3b384ffea30ae4afc499c059556e4c91ffac' 
  AND token = 'Glg9Q+jVbWtGZB2QGii7cayr1ctl9w8QQQHqG23PmKI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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