Pre-heat air fryer to 350 degrees F.
Brush the olive oil all over the turkey breast.
Combine the thyme, sage, paprika, salt and pepper and rub the outside of the turkey breast with the spice mixture.
Transfer the seasoned turkey breast to the air fryer basket and air-fry at 350 degrees F for 25 minutes. Turn the turkey breast on its side and air-fry for another 12 minutes. Turn the turkey breast on the other side and air-fry for another 12 minutes. The internal temperature of the turkey breast should reach 165 degrees F when fully cooked.
While the turkey is air-frying, combine the maple syrup, mustard and butter in a small bowl. When the cooking time is up, return the turkey breast to an upright position and brush the glaze all over the turkey. Air-fry for a final five minutes until the skin is nicely browned and crispy. Let the turkey rest,, loosely tented with foil, for about five minutes before slicing and serving.