Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '401c24be6f28d367509ee9a39267c039f012829d3029012948de4b0e3d096036' 
  AND token = '8qRHTsU6sACE8licOnrdhlHgRTAVnLk6BcIZam7hC5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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