SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0a7ca9fe5f9bf521ac00a5a72f4b361b2dfe9d411205d4776c87e502244f7451' 
  AND token = 'yiVmPZlgRnSoZRkEGmv0ZAvJQ5G2woB0xYPt8l13ajM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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