Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0738f07d1ae4803c2dd6384c42731e771f4751f8d57aa84d8e8d93d6033ee29f' 
  AND token = 'gLykql0PGhlPSoocasxgBj5dsbxee0oTPb2PXfI77pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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