Hello,
WooCommerce affiliates products (https://docs.woocommerce.com/document/managing-products/#adding-an-external-affiliate-product) have the buy now button and the user is redirected to external URL once he clicks that button https://xstore.8theme.com/product/bae-top/
But if this product is listed on the page it does not have link to external URL once you click on that. So, it’s possible to add that link only by additional customization. You can submit customization request here.
Regards