Delete statements performance slow

I have a performance issue of the Delete statement

DELETE  FROM  CHESS_PROD.MPSFDET  WHERE  CCN  = :P02457  AND  MPS_REF  = :P03138  AND  MPS_REF_DOC  = :P02462  AND  MPS_REF_LINE  = :P02474;

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| Id  | Operation         | Name     | Rows  | Bytes | Cost (%CPU)| Time     |

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|   0 | DELETE STATEMENT  |          |     1 |    55 |  4275   (1)| 00:00:52 |

|   1 |  DELETE           | MPSFDET  |       |       |            |          |

|*  2 |   INDEX RANGE SCAN| X_MPSFDT |     1 |    55 |  4275   (1)| 00:00:52 |

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   2 - access("CCN"=:P02457 AND "MPS_REF"=:P03138 AND

              "MPS_REF_DOC"=:P02462 AND "MPS_REF_LINE"=:P02474)

       filter("MPS_REF_DOC"=:P02462 AND "MPS_REF_LINE"=:P02474 AND

              "MPS_REF"=:P03138)

Table structure:

CCN           

MPSFDET_MAS_LOC

ITEM          

REVISION      

MPS_DATE      

MPS_REF       

MPS_REF_DOC   

MPS_REF_LINE