Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '482d1c4f936cc4c7f2c1a7fe7e1a39bd5841613e56edac72192cbe2036b46813' 
  AND token = '49u8luIf3xSdYcsSEvCGg7mAOzimpnmEjFi2DBACUZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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