Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d32ce849635da086a1bbfbda1fe750f5b25e8340a1cd56247b45a32825006c1' 
  AND token = '4N/wHRCFxW+toGr+MShcJgQJp0bSCcGYL+oxWw32px0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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