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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1132ed9d1fb0bf6a487626c3071b1a26fdb8b0fa72cf42f3954163d941d3964c' 
  AND token = 'Ka8LSnXVorovQiyMPs8xVk3KylJ7C4mYTb0JDkevezY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

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