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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9913006063988f4ef7459083a7b432d4ae0194449001de9e5914f652de2dfa60' 
  AND token = 'y+SlI5fZ8G3NDIpC8YQj+4HT3XJ/S/al2zXmImUNSN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

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