Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49fdf4aae75d6fd22ce8a28dfcce289ad91755a64e5723c2cc15176d2bed0515' 
  AND token = 'Hi3QNKmGVRrFPM8Ja7Qyc87SkYLVIUpKEN6/250xoHc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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