SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '759ff2328a31e6512ed180ac0eff9fef5c41b25ea84fc586cd024e3b618129bb' 
  AND token = 's+Z+1/jXaT2RVvx7BXLQg2zlFWb0ylrKMtYs8QqNI2w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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