All of my cages are in a snake room. I have a mixture of stands the different tanks and cages are sitting on. My large 4ft x 2ft cages are on a folding table I bought at Lowes. Nothing fancy at all. But it allows me to stack tubs and other things under it and in my designated room it looks fine. It would not look great on display in my living room. This table though is a bit short and my cage sticks off maybe a 1/4 on each side. It is also plastic and the cages are pvc so there is not much friction between the two. I say this because it has been working just fine for me and mine are stacked three high. I don't think you would have an issue with the cage sliding on the wood table.
If you are really worried about it though you could just add some rubber strips to the bottom of the cage or maybe even one of those rubber mats designed to limit rug movement. It wouldn't take much to make the cage stick pretty well Id think. Your snake is not going to be able to move it, that Im sure.