Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7a461cf3f647fd79e8ae3d5abfc60be601f1224b527f38068bdba3a0857af572' 
  AND token = '5MQWw5/3rUHj6+7BLOy8K3HGAOngxQUbdr0B9iQPUaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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