SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '065312bab624b6c9326099c7ab45edd2457393e03e1e34aa7fe753c89c74c430' 
  AND token = 'Yyg+GlrE40GM7ue6t4GkrwCCsm/4Q2yoeUK1pMAdrC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

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