Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ec7f9356ea500b3cfda016e5a51f493a814d857b62c1a0b188e85425ea6d511' 
  AND token = 'skrxz6Q+zuBElT4S/X8emfzXZOgp/CNe3VK08X5ijTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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