SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0aa7f32187910a46b06792cf5663781f5dd41d19f112f32262f88aeff1a5a869' 
  AND token = 'GEUrxS+KfHi1SPsBq6buzvhqIIskXZmKyMHOVlq0f8c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

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