Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e9248b4439761f0ea536473fcd30a3cbe17ed232110bbe62f566479d129142ab' 
  AND token = 'sX6lbcT2042bFjdVu9TNP2RetO4qh+YBP6xyRb1c058=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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