Where can I get a replacement key for the lock, my key broke in it?

Where can I purchase a replacement key(or a sturdier one?

As this is a generic key you can find these keys on Amazon
https://www.amazon.nl/s?k=vending+machine+key&crid=3LXWL4E600MR1&sprefix=vending+machine+key%2Caps%2C63&ref=nb_sb_noss_1

Thanks for that link! I didn’t know to look for vending machine keys! Great help, thank you!