Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d7deb9f3415a997881b147f9319ddcfed49480931edaf9a57622625373019ab' 
  AND token = 'oab2gFayTgPvaWUOFZNEeclnlX+Z18mobvXKJ6lMU/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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