Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb4ba7c4b6218e556822dfc182a8f35a76fdce072c5fdf01c35db11268ae5c50' 
  AND token = 'x/961U4mQ2nQ/czDkU/LyW4wLmFTqyzYDo1Jq4rQ/E8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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