Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f77b5029fd6d8cb8b1c170f1da4a20676c735a5163c816dcdb0f84bed64d552d' 
  AND token = 'hFdSyCa15fF4Zylx/iAxODZIGJkYrAyCWzrKeHRrMjM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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