Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19c00085e90ea5b489fca3d925942176b7231fde2e9ae58a6d55e4d8570985c5' 
  AND token = 'byil+Sml9jTfJf6TcC36T3wFR/zSI1TXY+M8qBTYkfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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