SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57232ebcca4dc69306c8334d44bfdef384699e3b5920736b7a27173ed885afee' 
  AND token = 'NhPrQx6S7Kzgk6j2pCuV3pwjsXEvBLoI/OU9oL+ekI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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