Chicken breast sous vide: Time in fridge matters?
According to the Douglas Baldwin pasteurisation tables for poultry a chicken breast of that thickness would be pasteurised after 55 minutes so you are well within that range.

Thickness   57°C    58°C    59°C    60°C    61°C    62°C    63°C    64°C    65°C
   20 mm    2¾ hr   2 hr    1¾ hr   1¼ hr   1¼ hr   55 min  50 min  45 min  40 min
   25 mm    3 hr    2¼ hr   2 hr    1½ hr   1½ hr   1¼ hr   1¼ hr   60 min  55 min
   30 mm    3¼ hr   2¾ hr   2¼ hr   2 hr    1¾ hr   1½ hr   1½ hr   1¼ hr   1¼ hr