You can use sour cream instead of Mexican crema if you can't find it. Instead of Mexican Cotija cheese, you can use a some feta or even parmesan cheese as easy substitutes.
Cut the corn to the size of your air fryer basket or rack (some might need to be cut in half). Coat the corn with melted butter and season with salt and pepper.
Air Fry at 370°F (190°C) for 8 minutes. Turning the corn.
Continue to Air Fry at 370°F (190°C) for 4-8 minutes, or until kernels are tender and lightly browned. (Cooking time will depend on size of corn, how full air fryer basket is, & different models/sizes of air fryers).
While the corn air frys, make the cheese mixture. In a bowl combine the 1/3 cup sour cream, 1/4 cup mayonnaise, 1/2 cup crumbled cotija cheese, 1/2 teaspoon smoked paprika, 1/2 teaspoon chili powder, 1 teaspoon garlic powder, 1/4 cup chopped cilantro, salt and pepper in a large bowl. Mix until evenly combined.
After corn is cooked, spread the cheese mixture over the corn. Sprinkle with extra crumbled cotija cheese, paprika or chili powder, green onions and/or chopped cilantro. Serve with lime wedges.