UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RMchkWKM5qmaDJVs5tzfNEel2Zwl4x9pp1vPTpEGtP0=' 
WHERE 
  key_id = 'c8cb35b53b6cca13a884840bcc1f01f66a12bdc66db01ebf1b19b0032fb953c5' 
  AND (
    token = 'RMchkWKM5qmaDJVs5tzfNEel2Zwl4x9pp1vPTpEGtP0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )