Laravel Licence System

I have e-commerce script on laravel and i will sell this script to the my customers but i dont want to give full access to my codes.

So i thought about some licence key system. For example; i will register licence-key, domain-url and host-ip on my client server and i will add some control mechanizm on the client side code so the customer can not access the script if their licence-key, domain-url or host-ip is different than in my client server.

But i dont know how to do that. Can you guys help me about my question ?