Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a89fb004aba153d70a0fc57350ff9b74038a458219ec7efab2089ed0388baff8' 
  AND token = 'gDnVnrLusyhb4xcO75EAjxlxHfKYZjtmQKxnY7qkkN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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