Change Key on Push to Start Car?

I lost my key to my car (Nissian 2011) so it's push to start. I'm literally panicking that someone can pick it and drive away in my car, I don't live in the best area and I think it fell off my keychain around my house. Is there anyway I could get the push to start key of my spare changed? So that if someone tried to use that lost key it won't work? Everything is computerized these days so no PHYSICAL locks would have to be changed.