Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd99e76a58a23bbf00e8b1c68d61b7c55804f592fe3578c5b277be12dc96bf711' 
  AND token = 'iPXG9J2FpJ0W+4hAkuUw5ACP58rKvsn6rKaPfYPcCE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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