Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6df5c319033c93ccc244c728d3e4c63bf767ae967020eaf0630a8c118d4f9728' 
  AND token = 'ZIRD3lm3UHk7E+d8sYKz8EluP4G+j7nj+tQLM9sSsPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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