Cómo crear índice mysql
# index_name will identify your index for future reference
CREATE INDEX index_name ON table_name (column_name);
alequenildo
# index_name will identify your index for future reference
CREATE INDEX index_name ON table_name (column_name);CREATE INDEX index_name ON table_name(column_name);
CREATE INDEX curd_user_email_index ON user_crud(email);create index your_index_name on your_table_name(your_column_name) using HASH;
or
create index your_index_name on your_table_name(your_column_name) using BTREE;