I think for a shot time it should be OK. I try to keep mine 88, but sometimes it gose to 91 when the room is too hot. But the snake will chose the place he want to be.
I heard if it gets too hot, your bp will get sick, even RI. I am not sure.
Is it a light? if it is, try to place in a distance. If it is heat pad, put something on under the mulch. like a plastic bag or something.