Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fafa8ba068c4910321e286267124a54e3af332e071db0dc1e89384c2978dc9d7' 
  AND token = 'oNUpSRkP8XxNVhtmBa0ekP37RI7e+X5UfMNXs5qkolc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}