DAP claims it’s paintable in an hour and can be rained on after an hour, but it took overnight to cure when daytime temps were in the 80’s. Since it can’t really be “tooled”, you won’t get much of it on your fingers (paper towels, soap & water clean up).
https://www.amazon.com/18021-Concrete-Mortar-Watertight-Sealant/dp/B07NDL2ZB2