UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '34mzfwDcfPWLAsJZmRSmwAlEr4nmtCYasePmtEE7CEQ=' 
WHERE 
  key_id = '8fb935abcb1f43d98cea776d824d2d850c7090e854779102ce62db8a3a4849c5' 
  AND (
    token = '34mzfwDcfPWLAsJZmRSmwAlEr4nmtCYasePmtEE7CEQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )