SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85368565ae93bb2011a503e4b8d798761f2c432751251e5bddd086e1f02a7c69' 
  AND token = '6Vzw9lDB0uBX1EJMCWZ65e+oxNEic6WZBu1gGuTtwGg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

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