UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xRe56hJEqNhOagu9vAhd68xzrVCGuMA389Rnlf7YTt0=' 
WHERE 
  key_id = '6cdf9123e8bedb3670f8df4adebefc4ae677055da9c89460ee7a97621b7d391e' 
  AND (
    token = 'xRe56hJEqNhOagu9vAhd68xzrVCGuMA389Rnlf7YTt0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )