SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d48e196174269804b74b0e8e603a88dc206f9e6a22b25538b1d8914a2a15455' 
  AND token = 'Ag2Ucsc/czporUO4qZWdJ5O4JUeaf5EFZnKKzLkz888=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

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