SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1112689f8bc6abb93b682f57446b9033230f97203ea14b27bab625347fa0a38c' 
  AND token = 'HEYdP1sgHM9dz3Jp/OwR3FI7TO+huzgPJvH0J3pw8yU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

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