I think this is more like "do you have time?"
Both are possible.
Doesn't 시간 mean hour (duration) ? Does it also mean time?
5.22.2020. Question won't accept 있어 or 있습니까 (and probably any other conjugation).
What about 번? Doesn't that also mean "time"?
It means time in a sense of doing once, twice, ....
for chronological time you need to use 시간