My wife and I have tokens from 2019 and I was wondering if we are able to use those for this years runs. Any help would be greatly appreciated and thank you for the help in advance.

Yes, all tokens can be used again. Some tokens like scrolls or potions are taken when used. But armor, weapons, and other gear are reusable.

True Dungeon doesn't have any rotation of tokens or anything, so unless you have a couple specific ultra rare tokens that were nerfed and replaced with new versions (and anyone asking this question almost certainly doesn't have them), your old tokens should still work fine.