UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'p8L2QjQDVyCTmB5nieEL+LNaiVeGnfGu+w6edVYTsI8=' 
WHERE 
  key_id = '26d137fb75aeb4b0469b0ed094a851dd8506b0f16c5747c0647c8d297062a1d7' 
  AND (
    token = 'p8L2QjQDVyCTmB5nieEL+LNaiVeGnfGu+w6edVYTsI8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )