UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'arqKgyUJUadL2XOufKU9bvQTRPChdKEEGZJUz3owo5o=' 
WHERE 
  key_id = '51c100d2dabe5df6cbc0a0baf47d80a010e6335c9f1affac3f02867cb941cc80' 
  AND (
    token = 'arqKgyUJUadL2XOufKU9bvQTRPChdKEEGZJUz3owo5o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )