UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'QMLAcUyWEHTWQwlfqtkJpHCEgBr/LQDSUNzXb6xFOPc=' 
WHERE 
  key_id = '518e8f0d3ff7ce47258c8a2aef6bf839a61c95edd455595e5fe85c2c527d1143' 
  AND (
    token = 'QMLAcUyWEHTWQwlfqtkJpHCEgBr/LQDSUNzXb6xFOPc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )