I once worked in a factory where the floors were done in ucrete. Looked good. Was a fruit juice place so meets your requirements.
I now work for AkzoNobel the worlds biggest coating company (all comments my own not official company statements 😉 )
If you go through their site then you’ll find plenty of options.
But as above epoxy and polyurethanes are your best bets. They can be relatively easy to apply yourself with a roller (I once did the lab floor in a polyurethane). Read the tech info though as you might not be able to apply to fresh green concrete or there may be some prep required.
Also consider the health and safety implications if you are doing this at work. Some of these paints are hazardous materials, not like emulsions that go on the wall.
If you struggle to find info I can do some digging when I’m back at work and come up with specific products or maybe even a product guide.