Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e397ec3ef3183ad9d2462de959fbdad3f20969e2daf3f1fd21d0b406c432bc22' 
  AND token = 'Y00BmqXRDu9F91hK9MKTGN/G5RZNB2BLaXVfBuK70Yo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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