SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '061a193d75ceea82d3a728f7bd69103a0e738ad6a400bb6698c4cd2b8d994c5b' 
  AND token = '98Z0+R2hTBmrBXWjrHleLBhJLmPFomCm9rl8RFpPPxc=' 
  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