Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ced636c2f3b75e189caa85c7a77a9469f0ff07c6a8dc0dee5effc6b9de1fb5b' 
  AND token = '2xa5NANeE6Tu1jbQxEUsJXPbacZRvFVqZB647wvCZFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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