Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09eeb9733cea2c1405071f30d5a93317a796903b6a816a0a7ced4fc39e503378' 
  AND token = 'nud9xCWPT450fFtNoRGP7C4At1QtTwBDoJCfCPef+Kk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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