SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfa509bbef8eb5778ffa6846013e81d5cc361d0a8c7627b55108758319836b4a' 
  AND token = 'NJXpR/1RdC9zDaYAvIssXHi1gwJjIni4iyCzGD922ko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

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