SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0925047dfc386821151971d0e1a795c820089a377f00c9e0d27cef32c7ef2c3b' 
  AND token = 'fJD+JjiOlQ5Va8xs4shQU96ezNqsNGlRxIyh8xb+ado=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables