In 1964, a group of scientists create a portal that takes them to a barren, mutant inhabited, Earth in the year 2071.
The general assumption is that if a film is picked to be on "Mystery Science Theater", it must be a bad movie. And more often than not, this is correct. They really have found the worst of the worst. But "Time Travelers" is not one of them.
Yes, some of the acting is a bit silly, and there to plenty to make fun of. Some of the science does not really make very much sense. But you have to be impressed by the work that went into the androids. Wow. For what was likely a very low budget, the androids come off as some quality work. And mixing in a few clever tricks of the camera turns simple scenes into complex ones.