Evan Williams Egg Nog Question

Just a random question. So I have a bottle of Evan Williams egg nog that’s been sitting unopened in the back of my fridge for 2 years. I just checked it out and it seems fine. There was a small spot of separation that mixed together after I shook the bottle. Other then that, no chunks or off colour. I just cracked it to smell/taste it. No off smell and taste like regular egg nog with the burn of bourbon. Is it ok to drink the bottle or is there a risk of poisoning myself? Also if not, how long does it have now that I’ve cracked the seal?