UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'N6RPLSLJ1Qt2oiw5oQl30he48/UpUwQQelr/+amGBPc=' 
WHERE 
  key_id = '69bba93a251713c344b63b50add1cecfe1087b718434e011e3a40499db78a231' 
  AND (
    token = 'N6RPLSLJ1Qt2oiw5oQl30he48/UpUwQQelr/+amGBPc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )