UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PxytoAt63OeQbTqLoZFTx5RMsVlGXPCvCy7IueWUiFc=' 
WHERE 
  key_id = '7c6515e026841fe1e60501c1ca83a9e82189dfc79b2baebffa0781679a2c6407' 
  AND (
    token = 'PxytoAt63OeQbTqLoZFTx5RMsVlGXPCvCy7IueWUiFc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )