Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b8baa932851193c20371c43ceac3ae94632c829fa50c63d6b09e31a2c415c77' 
  AND token = 'QccZ0IImHh5W981vK6fwEd/OWeFFQ0cPSC92y2HLpyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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