Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f729bcabdf39145597e79b45c3224852ab07ae7d79f6a207c1d2d6592b5670ae' 
  AND token = 'J1PXOUSLeZHE0t3yph4t563w6a4Pa0665IF+u0dljCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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