Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '30e1c34484feae7ff0188a8deca28f00a50771882fe52af4169e3ca0eab0f534' 
  AND token = '65MIdUduilylwXtXESe8B6Ib6OKiMP4dRInwOUTDkqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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