Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05fc7e71c05aeb91b84b912d343f55bc45865e9474ac57a6d9079d85d7a09619' 
  AND token = 'LALxyEAkG9Uv6bjBKMW3eGb7fqcGG10ZSO14eiGRlT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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