Heated air rises and the higher in elevation in a room the warmer the air, and the warmth will move up through the building as well, which is why upper apartments are usually hot and ground floor ones colder.
Soil and concrete are resistant to change in temperatures. The ground tends to maintain a given temperature over time, this is why the ground only freezes to a particular depth in the winter.
Given that, it will be nearly impossible to warm the room enough to warm the floor enough to be comfortable, and if you did, it would take a lot of energy and therefore money, because much of that heat would rise away as well.
I have an old house with an unheated basement and no insulation in the main level floor. What I do to deal with the situation is to use a small air circulating fan to mix the air in the room and move the cold air up and the warm air down and this makes the room all one temperature without wasting heat. Then I wear wool socks to keep my feet warm.
If you very much want to have the floor warm, or at least have it not feel as cold, I suggest adding a layer of insulation on the floor. It would require a finished surface on top such as carpet, hardwood flooring, or tile.