Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9afea939890f427eb9a2e36489e7e026fc918c4c339ebf327bbbccdeba4d58ae' 
  AND token = 'AiNoPpc9dT+MQbdiCQz2BjfWk6q+Po+6msNI2DW7S1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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