Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c30543ac016c520f47fb60ffc20f84d96b0d4796b43032f6ce822d8ea0d9c85' 
  AND token = '8xcCq5eDGxiEejoLEax3h/iXHP7OA/CxXBwK03K50m8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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