Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ac28d2613c40cea677524a3d196f1586e6d811574c389458622a9bf506df12e' 
  AND token = 'jyrEM0Q2LE77AfwjF2jGsLn/xqJe0Avl1l+RUZ7i4yQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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