A simple product does not have the option for a quickshop link (link that directly leads you to the checkout) yet.
Though you can simply create a quickshop link by using URL Rewrite Management.
- just create a new Rewrite Rule and put your desired URL-Name into Request Path and then put the checkout URL as Target Path.
- e.g. in this example, if you go to www.glossybox.se/special-giftcard you will automatically forwarded to www.glossybox.se/checkout/cart/add/product/1577 where 1577 is the ID of the product.