Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a3dfc2f0aace34e09095b32d0d7ebd7115db8702bbde1c2a25ddb583203abe1' 
  AND token = '+kWovaqCnlvdfNinYZp9G7dk6san9q4fLn57BOOb7GY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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