Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1941ea73f50b74c33a523691264a023567ed6e5ba8782877f9df6d670edc55e2' 
  AND token = 'p1rUfw6MXu1BeJ78cRxCp+mcpbgN88VTtvkG/ChJOaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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