Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9171bbef45a796421daf50a44bbcc3f3a2f3e0cdfac4782aa07270fd9bce0926' 
  AND token = 'yqSk0Vq7Ifq0qFsufJYHiTTbNZ2tTbp54SlJEWl11c0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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