You do not need to manually create an event token to use the Custom Facebook Feed. For standard setup of the plugin, see the Setup Guide. Please note that a non-expiring Facebook Access Token is automatically created and added to the site when using the Custom Facebook Feed plugin and connecting a source.
If you wish to manually create an Access Token to add Manually to your site or send an Access Token to your Web Developer, please see these directions.
If you are looking to display an Events feed, please follow these directions instead.