Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '447d5d74cc74532c858b2aa5b830d018d16640c5cabd47a03ce043e8f1654ed9' 
  AND token = 'v3VfFJfILPKPuV8DCmrU7SCz/Clnus+3pQcEf8WTyto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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