INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    'a921248f020a5065e6a693433a3be0d81d02e18e653ababf5bc69095f968f752', 
    '3VemCEjC+Bw9m+H9yBhHLhgdo8QQzrvr8sdMOAjZ0QE=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00027

Result

int(1)