Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeea22bbf4bd77f17459ee7d9e76374fd6cb675a33b925117c59c32719eac7c9' 
  AND token = 'bfcfgQv97vNfrN6vE4BW0GQh7/svMAw+/XmV96ILNb0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}