Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d6fca3ebafe75c54320ec58caceb9c77b85eedb36aec082d202bc7280c2d18a' 
  AND token = 'jNnJF8HD3OtWQBdC9OXgNM6VLPdVoY7npmYiavDx2UY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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