Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90973f06295224be41d25903c10a5f40bc5593d28ae11f582f2334c2233803ef' 
  AND token = 'iijhH85pH/Kob/5NNLxFq6irvDZMaQuplz//UMD2UCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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