Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69b893f37d08ba1878bedf23af1ee214d94679fbd7d6cbfea3c347f042482da2' 
  AND token = 'dky0pMKee2+JuNBVgs2EjwSvJ4nTbg3CNiR1mck3g6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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