SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd78809e8ad816e18731efae85380844a0babeedb9bef74e7cd0fe69a4ca989b9' 
  AND token = 'o933P9Wt/OgrydT2vTu21WGt+jCd4+u5GZl70Xg0dCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

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