Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9b59c161d3bd7dc85859a96c4deb82b2daf4ee17118adf7af1c029b224bea4dd' 
  AND token = 'jSFSFCog4gsI7IzQHbBIbdxByH+jJijWfYBEH51HDfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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