UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'n2krvbl/8itK7Qt9byysYVKuEoOyAT7+L95HpTnADpk=' 
WHERE 
  key_id = 'be4cc21df94a4f622f84e2155427afb211938616da067ac8ea1ed3faee6615a2' 
  AND (
    token = 'n2krvbl/8itK7Qt9byysYVKuEoOyAT7+L95HpTnADpk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )