Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eab3b63b388dec64fd88f6f169fd72e16e2cc8c0ee422033c765368fcef78ca6' 
  AND token = '82iUMoT2fq4OsXA8qSNliWhbGAfbeGhFYql2A0qwIQE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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