Laravel Deployment on Amazon Elastic Beanstalk - Passport Encryption keys

Hello,

Can someone guide me into the right direction to deploy a Laravel Application to Elastic Beanstalk that's using Passport? The encryption keys would need to stay the same, so that my mobile App's don't lose access. How can I achieve this?

I've heard putting the *.key files in Version Control is a bad practice.

Thanks for any tips.