Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '452e2e78440a24bc430c5a9d0a7fdd2a4ebe8ad5a5758fffff88a98823056d94' 
  AND token = '8W9tgZfPRLlYIDUoksmaaEytISyB/+qRblZOkeQjkb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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