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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fac90bea91120133f2d1e91b309c3ffb050ec1377e6ef963d7137b943429a575' 
  AND token = 'XDGDnQQvtDc9Y6HED5YwY3C3OGRHCDWkAGhjNh7cdao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

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