How long will peppermint vodka (30% ABV) with sugar in it last in the freezer?

I’ve had this bottle opened for 2-3 years. I poured it into a glass and it was clear, with no off odor. It’s been in the freezer since it was opened. Is there a cold-resistant bacteria I should be worried about feeding off the sugar or am I probably fine to drink? r/Science mods removed this post so I’ve come to you for help.