Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5bfb6a91ebe73b4576192dd4ab818f6bd860414be5260f424318bfecba5eefd' 
  AND token = 'MXX7MHtE9jpKT1jnbL7k+d0CLFcsdVU9vV9I6/botts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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