I don't know specifics here, but I can tell you at least what you know.
Snakes get generally most of they're hydration from their food. Electrolytes are a type of salt. The salt is easily digested in our system, but a snakes system is so complex and specific that I wouldn't know it to be safe to put salts in their system.
It could be harmless, but because we digest and absorb things so differently, I don't know what it could do and it's not worth the risk.
Just my thoughts. :cool: