Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '28620fa8eb93429948c530b4d484f23ce143412b42767152260ea6f45ae24f32' 
  AND token = 'lTDQhx2mtLXBO7hS3yRcuekyhruWX1TgEkskbmIjIkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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