Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f5156d4b59b84185fe7ede5f7ebea403ec96631ee4bf826c8b5710b5ce5a477' 
  AND token = 'm80MXJQuafkiQx2skVCjeerPYipg6Cu5flU3c23jW20=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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