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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10f56141c7a018709fee4fd218c2f5e8908f69c6fd5c5f7237c5b095ec6d226b' 
  AND token = 'Oes6HJFPMYAla04AJ9qzdvDx2VBMiTxP5x8sJLAGfiI=' 
  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