UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'a3BTO5c5epHtw4PTHpiWjwlG6fJb7CmsuKzYenZqXPc=' 
WHERE 
  key_id = '93ff3c6d4d1cdbf40a2caa63ddd6c8f3b581a72c32df7f3290bd725517df9763' 
  AND (
    token = 'a3BTO5c5epHtw4PTHpiWjwlG6fJb7CmsuKzYenZqXPc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )