SET @cartorio_id = 33;
SET @taxaBoleto = (SELECT taxa_boleto FROM parametro_boleto);

SELECT "10209577844000174000"                                                                          AS campo1
     , "00090032000005002"                                                                             AS campo2
     , "                         "                                                                     AS campo3
     , "00000000"                                                                                      AS campo4
     , boleto.nosso_numero                                                                             AS campo5
     , "0000000000000000000000R00906"                                                                  AS campo6
     , DATE_FORMAT(NOW(), "%d%m%y")                                                                    AS campo7
     , "          "                                                                                    AS campo8
     , "00000000"                                                                                      AS campo9
     , boleto.nosso_numero                                                                             AS campo10
     , DATE_FORMAT(boleto.data_vencimento, "%d%m%y")                                                   AS campo11
     , SUM(titulo_encargo.valor) + titulo.saldo + @taxaBoleto                                                        AS valor
     , "237"                                                                                           AS campo13
     , "00320"                                                                                         AS campo14
     , "  "                                                                                            AS campo15
     , "000000000000000000000000000000000000000000000000000000000000000000000000000000"                AS campo16
     , SUM(titulo_encargo.valor) + titulo.saldo + @taxaBoleto                                                         AS valorPago
     , "000000000000000000000000000  "                                                                 AS campo18
     , DATE_FORMAT(boleto.data_vencimento, "%d%m%y")                                                   AS campo19
     , "             00000000000000                                                                  " AS campo20
     , SUM(titulo_encargo.valor) + titulo.saldo + @taxaBoleto                                                         AS saldo
FROM boleto
         INNER JOIN envolvido on boleto.envolvido_id = envolvido.id
         INNER JOIN titulo ON titulo.id = envolvido.titulo_id
         INNER JOIN titulo_encargo ON titulo_encargo.titulo_id = titulo.id
WHERE titulo.protocolo IN (0000000515)
  AND titulo.cartorio_id = @cartorio_id
GROUP BY boleto.nosso_numero;