Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a19a8f092e2507fb7a4ea71c5b6bb84dbbe7eada9c5f413a891161cebc49a63' 
  AND token = 'Guct29gsRjb4XMzfHeWrN889nJlI4CF6ozcMNv/Bl9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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