Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c59ed008509ba8362057bcf730b31e42e3b73517313eaa9b87cb6d8bbccaa25' 
  AND token = '4+TRaDEJ0r6odAviJnfcKVRbg7VA2R/xE6buTZx4mG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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