Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6337301b1bb398d390b7f5444bd3e42dd1e13e1590f485192f5c89f6f7204417' 
  AND token = 'qggsoHhXWHOAqPEY3rhMQyWTTpzNEmK83yc5PhRzF4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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