Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2db3611abb2a9b7c8ac3cbbcca62c20cea0bda0464cbf398e1167b2c926efa13' 
  AND token = 'dmhw56derCfZzRiMHnhTs50vMhW4CpGvii9ZLk/JKlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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