Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd75011adadbb30e6ae9a8fab1ecd489f4711e7ed1d258b0146e5899548f0a117' 
  AND token = 'boOlGmNgW0KVoNAIz0M0WcadUA2BYF4hOHamKtGr+2Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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