Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31e0be7cbb40c2e176f662987e465f810334109c0a8ee2d3d63e7a57c468656a' 
  AND token = 'c/XXSopISIUFHkeQMpOJr27MZURgK8ZRq84jpR7x3vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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