Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c6eb791ce1323307f613b8bca557d0c0885dd04691b3ead787ebef1fd26b646' 
  AND token = '8iFifseSrpeFYUt4wQbTMMIeR5/ixSd6C2cmxIYQKh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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