UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zFlyBU4otWCWQzD6mG2dRWsPpYXD7Rt76N94L23A48U=' 
WHERE 
  key_id = '7c3c6cea1dc38172cc90993447bef8756dd8668c7c57f565f3119ce37abb3795' 
  AND (
    token = 'zFlyBU4otWCWQzD6mG2dRWsPpYXD7Rt76N94L23A48U=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )