SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a1072f9e1a2457c40130ecee650c1c75ccc65837b38388d6e7d5ccba13bc4d2' 
  AND token = 'czbenry2HDzuyBWx/J+1xCk3OeJPbZbvDFbkOmXuUsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

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