SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96bc792f86f0ecdc5a308f4f4702b9a21a72f0c6483d36a68dfb455ac2638c90' 
  AND token = 'Zu48eUgRb3pklOnHX1aqGVjnriF5fGTEkTwAOJMCQ/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}