Preheat air fryer to 380° F. Spray basket with nonstick cooking spray.
Combine cornstarch and salt and toss with chicken wings until evenly coated. Shake off excess cornstarch and arrange evenly in one layer in air fryer basket.
Place in air fryer and cook 20 minutes, rearranging once halfway through cooking, until chicken wings are thoroughly cooked.
While wings are cooking, combine all ingredients for sauce in small saucepan and bring to a boil over high heat. Reduce heat and simmer 5 minutes.
When wings are done, toss cooked wings with sauce, garnish with green onion and sesame seeds and serve immediately.
Tip: For a more mellow sauce use ¼ cup soy sauce and ¼ cup water instead of ½ cup soy sauce.