Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '035a3ce00cc13b44a7a4e2d1c49c682eed74fa10055fefe52592c4859fb1003b' 
  AND token = 'MSJVhsVoVk38PB/Hp1kqYannW1y8OmDXiHvzG2x/Oms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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