The first is correct and common. Joe wants coffee. [statement] Does Joe want coffee? [question] Who wants coffee? [question] The second is an example of "emphatic do." Who wants coffee? [normal question] [Susan] Not me. I want tea. [Joe] Not me. I want tea. [Jill] Not me. I want milk. Who DOES want coffee? [emphatic question] Here is a related italki discussion: https://www.italki.com/post/AJ8yopL4FPpamKg0ZdMGpk Here is a background article: https://www.thoughtco.com/what-is-the-emphatic-do-1690590

Both ways are right and have the same meaning. Like @Chris said, the second one is using the verb "do" to add emphasis to "wanting coffee". The use of the "emphatic do" is more common in speech (and pronounced with emphasis).

The correct question format is "Who wants coffee?" Does would be utilized in the case of "Do you / does he want coffee? This video may be helpful about when to use (or not use) the auxiliary verb "do / does" https://youtu.be/DFsbmCnzdDI

Sorry, the correct ask is: Can anyone please explain, these sentences have different meanings?

Кто хочет кофе? Кто и хочет кофе?