Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2eae7ef0f544464a615a1663a0a40fbf5a36b83cc5e98269f25058f4f470e485' 
  AND token = '37iaXktgqwX5PPOGAD7AWsQlFrXIHp0sR07/tug7jlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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