Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27d6031c242c9c3dcc56a613f5fd1f4cf14112dd020d7f2b5ae3372271b00ae0' 
  AND token = 'aQul0zk0NcizxUNjbXn7TjdjLTcvdFP74gudyt99J/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}