SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73330898d1a5aed4cecef4eb2506c26e23d725d7c477ac123c10133248ae4221' 
  AND token = 'LtY08k1xqjkv3Jew+VWqAKlcRIseDouoduaEvHoYCa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

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