Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baedf85a0afd87bcbb7dbe09dba03a1dc33c14d7ba41c232c9aae62d92c16792' 
  AND token = 'wQ+0n4fm3utJkIp8FAZJ8STgMo0/0eDyhdkANgAYyD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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