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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd96eb3c2f9d4547917f979df938de9ababd5f8e55fc47fd47f54e06167d4d408' 
  AND token = 'rZTraN8oF6hAbYnoIYF7Ky5OUi7R2LyZ6au55KAXVnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

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