Should be fine. Epoxy contains no water, so is not damaged by freezing.
Some users rely on this when they mix a large batch, putting one half in the freezer so they can use it later! I have done this with epoxy adhesives and putties with no harm to final product.
If you doubt you can test it. If liquids look normal, it hardens in usual time and you cannot separate pieces without wood itself splitting your epoxy is good. If your resin has become cloudy you can restore it by heating, see link.
"First of all, do not despair, frozen epoxy isn't ruined! Although both your resin and activator are capable of freezing, it's very easy to return them to a usable liquid state."
From WiseBond blog, What Happens If My Epoxy Freezes During Delivery?