the Schmitt trigger increases the consumption of 2-3mA which is too much and I didn't find something with low current. I need something in the order of microamps.
It's hard to do too much better than a single logic gate here. Don't be confused by the "additional current" specification in the logic gate's datasheets. That specification is trying to describe the behavior where CMOS logic gates draw extra current if their input voltage is near midrail. It's basically shoot-through in the gate's input stage. With a clean logic input pulse to the gate, the input voltage races past midrail, so the current draw is large for only a very tiny amount of time, and integrates to very, very little average power consumed per transition. However, if the input frequency is very high, this can still add up to be non-negligible.
The Schmitt trigger is worse than a standard gate, because it has additional leakage paths. These paths also keep the gate stable so its inputs can be held near midrail, such as when the input waveform changes very slowly. If you are driving from a digital source, like another gate or a processor GPIO, you can go with a standard inverter ('04) just fine. (In fact, this is usually the better choice: the Schmitt trigger also adds unwanted jitter.) That said, the Schmitt trigger will not be much more power hungry, but if you have a free choice, you might as well pick the better one....
Logic gates are optimized to do this sort of job and do it with as little power as possible. If they look worse on paper than the other options, it is probably because their datasheets are being more conservative. Analog switches and comparators aren't often rated to toggle at 100 MHz; logic gates are, and they still meet all of their specs doing it.
In terms of logic family, generally AUP leaks less than LVC, which leaks less than HC. So if you are at 3.3V or below, choose AUP; 5V, choose LVC; 6V, choose HC. (I forget where LV falls in there, much less the other, rarer families. Honestly, you basically want the newest one.) Or choose their differently-named equivalents from other vendors.