In a small bowl stir curry paste and lime juice into mayonnaise and blend until smooth. Set aside.
Whisk flour and club soda and salt together until smooth.
Pour vegetable oil into a large pot until 3 inches. Heat oil over medium-high heat until temp reaches 375°F or until batter sizzles when dropped in oil.
Working in batches, coat 5-6 green beans in batter and drop in oil. Fry until lightly golden, about 3 minutes. Transfer to a paper towel lined plate and season with extra salt.