UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VEXdVJpRvyDo4pevUhC23RWNJ8aYEa2CPUy4I8k5o6o=' 
WHERE 
  key_id = '50797894598c12bd6965834c43f05509acf0262e4bb0233bd043b2ceff862c90' 
  AND (
    token = 'VEXdVJpRvyDo4pevUhC23RWNJ8aYEa2CPUy4I8k5o6o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )