Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '201dc7c667cf1bf6aa09f45d4ddfc40a77854c72cd808bd2eed03a0a5aecba28' 
  AND token = '9TRD5z5IJrWfFfEf1jWNbXmH92YzfDbed01/q8pW2IQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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