Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '129b9580598bda097c99f68e509b77a56e88ba9630def7faf3d4f720a848aea7' 
  AND token = 'qQqqjNx+A3TmTp2WUVgLYskQX7OOmYQss51JzFzW7os=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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