UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+bO81YejrPppQEUfARq+En+O946ukXW9J9C1+WAxWSE=' 
WHERE 
  key_id = '49b4edffe52cfd6b46df93be025a2f762ad69b169717623275f1444e4152293e' 
  AND (
    token = '+bO81YejrPppQEUfARq+En+O946ukXW9J9C1+WAxWSE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )