Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07708ae361ec7922f6cac055e5030dacce27b34a180d8c77a2b1abfc47e694bf' 
  AND token = 'HkHjVvVAstt01x0vtM3sHEgNs1K1saB6qkrSEPhNvbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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