That's a possibility.
Although, I haven't seen any signs of it like cloudy eyes or temporary fading colors on the snake.

Thanks, I forgot about guppies.
The thing is.. I've never had success with guppies.
One time, I bought some and not one of the snakes that I wanted to eat the guppies ate them.
(I even tried multiple times.)
In fear that they would die if I didn't use them, I was forced to feed them to one of my snakes that would eat the largest variety of the bunch.

They aren't really cheap here, about 2.50$ each here. (If I remember right..)
Which may make it hard to feed it if that is all it ends up wanting.