Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '009ef986f8eb32b60272e0da743aa29d6c40efe5a28e62e2d51e1ce31ae82b27' 
  AND token = 'mwYw0E8o4Wq7beKRmCq0Fh9zBGpD7FfDAF0r5x6WZvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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