Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17a9be32f5eda45f7b57ceddd84c181e04567413a882270152a5955dde6222b2' 
  AND token = 'XjPCrUKDc60F7wc22EdjTfiMZVL+3dwMtCRXkSBUFc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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