SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee59781a407c9ea3ae7bb99768450f16c47ecf8fc60f265e86c53572e18bfe31' 
  AND token = 'LXegwnmDEeK4sdTWUZLLbqoogth+D0N+jxybMyFeu+k=' 
  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