I really like this instrumental, but I can't find its name anywhere. Not even Shazam or Soundhound. The youtube channel Watchmojo uses it for the mysterious videos. Here is an example: https://youtu.be/IzxQW9EB4Bw
For me it sounds like it is just a nice warm synthesizer pad with a drop-down kick added before the synth, not really like a whole song...
It would make sense for mojo to NOT use a foreign probably copyrighted song or composition, if they only use two seconds of it (Creating this intro sound need much less time to make than a whole song)
But if you want to find more similar sound or songs like this, you could search for «Synthesizer Pads» which is the art of creating ambient / sound-collages with synthesizers.
Here is a little example of a synthesizer pad from the legendary «Prophet 6» synthesizer which sound awesome: https://www.youtube.com/watch?v=KtjcMp2tqpc