Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71b49233df0aaa5279d81391463b1d212129404941d45c7ec5a0ba29971ecf69' 
  AND token = 'DcboZR3YPVnDm1hxoHh5yCNJfrRlLidK6cKVJVn/Q8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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