Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec8cfe034c5717571334c4eda183519709b73b800919fdb684ecee85f801ab7d' 
  AND token = 'wDQGYanZ16b0sZDeI/FVHRv9mrhqlgwbj5u9Q69pplU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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