UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'X6UdVzkja9IXyganyRJPjcNnGlpbTgkshql9sluAoaU=' 
WHERE 
  key_id = '189d729a82616ca3e36360f76734e647f1af643fac9a2450a75a8fb640434241' 
  AND (
    token = 'X6UdVzkja9IXyganyRJPjcNnGlpbTgkshql9sluAoaU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )