Just my opinion, but 45 seconds doesn’t pump very many gallons.
I’ve no idea what the size of your pump is, but as an example, a 750gph pump will theoretically pump 12.6 gpm.
Maybe my math is way wrong, but on my boat, 2 or 3 waves over the front or back will run the pump that long.
If the float switch is very much higher than the pump, it’s probably working.