There is a voice over with Russian translation, but from what I could hear the conversation goes between a 'Nick' and a 'Mike' in English.
Since it seems quite unlikely it's real, for many reasons, I'm wondering if it's not Vovan and Lexus talking and then... handing the recording to Belarussian 'intelligence' or whatever.
Another possibility would be a trap with someone wanting to ridicule Lukashenko, perhaps even someone(s) from his own agencies (a deep-state-like group).
Yes, unfortunately the recording turned out to be exactly as you describe, PoB. In Russia, the media are either openly laughing or just politely ignore the 'recording'.