Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '802a13ae883e63c7215ce04ea5244f7a82db445cac93ec11d41c15a2770ca80b' 
  AND token = 'nFVTYFw9hJBq/ELV9UkDk8uOgA2D+a1VHH2JqmN+deI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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