We got the Aussie actor -- who's the lead star of HBO's hit limited series, "White Lotus" -- just as he was arriving in L.A. for Monday's television award show ... and our walk-and-talk interview with him is absolutely awesome.

Check it out ... MB is radiating pure joy as he leaves LAX with a baggage handler in tow -- telling us he's super excited to be nominated, even if it means fellow 'Lotus' actors beat him.

If you didn't know, Jake Lacy and Steve Zahn -- who also appears in "White Lotus" -- are nominated for Outstanding Supporting Actor in a Limited Series as well ... but Murray's just as happy for them as he is for himself. We tell him he's the favorite to win, and the dude is completely humble.

Murray tells us he and the rest of the cast are out to party it up and celebrate the show's success, regardless of who wins. Fact is, at least one of them is due to walk away with a statuette -- because the series was so popular ... and the performances were top-notch.

We also think we might've learned what Murry's secret to success is ... and it seems to come down to what he's munching on. The old adage is true, and then some!