Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f36206186d25be3f8e336f9e2bfb9155cefc7ca40330269f9ab839916ba6f5d' 
  AND token = 'sG4xcOuuolo0PCntbdANuhgqd3qR+Ad84qjxvAzWbIA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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