UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '7lTpwNLfu2Q7GZIh+25MjwJACNRNOUBBYxjRCUeiUSg=' 
WHERE 
  key_id = '68b7895a8bb83db71e6f0e14eb976e04aa90a0f20cd5d6e336fe2940badc8f61' 
  AND (
    token = '7lTpwNLfu2Q7GZIh+25MjwJACNRNOUBBYxjRCUeiUSg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )