The British fighter is due to put his world IBF heavyweight title on the line when he takes on Molina at Manchester Arena on December 10, with a bout against Klitschko in the offing next year if he beats the American.
Klitschko is expected to be in attendance for the fight, but Joshua insists he will not be feeling any extra pressure if the Ukrainian does make an appearance, as he is fully focused on taking out Molina.
"No, no problem at all," Joshua told Sky Sports News HQ. "I'm not fighting Klitschko right now and if he wants to come down, have a little look, no problem. He's more than welcome. If I had the time, I would go to his fights as well, and that's just what we do."
The 27-year-old is convinced he does not need to send a message to Klitschko by securing a spectacular victory against Molina, as he believes his record of 17 wins, all via knockout, in 17 bouts already speaks for itself.
"My career, my discipline, my consistency, that's all the message, the package we've been sending across to people," Joshua added. "I think that speaks louder than maybe a couple of rounds, or a 36-minute fight."