SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bd12da9644cbcb74ae14d68de9767e222e536b3223b428d65bd52e6f500f189' 
  AND token = '/aUosjwCEoD5m6dyw25PdG7Aps59LjF/NSdYCURuTiE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

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