UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'S2k+GBN0XxtcfoRAH4q2VAS5cQihI8hgkXfC57I1lng=' 
WHERE 
  key_id = '7a68d667a9051bb96e287faed9e70392a501442ae611bd99233a2d59d834cb9f' 
  AND (
    token = 'S2k+GBN0XxtcfoRAH4q2VAS5cQihI8hgkXfC57I1lng=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )