Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63e75275b0c71759fa30c3715e26212058b5fae3ab688f2782018cb24e131f82' 
  AND token = '//MeNeB5uuB5a5/+p2jwyhdzY6wBjL9ifNtegDONT70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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