If you have ventilation holes in the plastic tubs it would keep it less then 100F... I highly doubt it would get that hot anyway. If it really does get that hot, a frozen water bottle wrapped in a towel (to avoid direct contact to the snake, would help it cool down. I use this for my mice cages as it does get hot in my room. The mice will cuddle up to the water bottles, so it definitely helps. BUt this is just one solution.

https://www.youtube.com/watch?v=ITtlxjvLQis

Here is a youtube video on how to make your own "AC"