How to run a cable raceway by doorway with raised floor?
Just to update with an answer: at the end only one cable was necessary, which helps. Solution still applicable if two cables were necessary (as originally stated): a plastic raceway of the right size is best in this case. I checked dimensions of all raceways I could find, and chose the one right the size I needed. That avoid extra wasted space and a tripping hazard. The photo might not tell that, but even with two cables it would not be a problem, it wouldn't be projected too far from the door to be unsafe.

The result is nice: