SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fcfdca8cd24412dee6e3cb9f94b0eb79afdd816f3d7aa9235d6c82d00cbf47ed' 
  AND token = '1OzWi3NHJQVm08xGk4wgKP/lepeJn9b+2mRZ2Sq+7zE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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