Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7d9ed0f195b2168b8da00e7b15bc2f8096913742117d170f0b7fb0619a6b0930' 
  AND token = '7xLh0c8nhbT+Hpl4daM/gdNoDRSuFoHW4Wu8vdnKrmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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