Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07e2faee196dba7921d180462ebdc987515ba4e8bd5c11a969e6edada69f9fe7' 
  AND token = 'ufNoae1Aq44jVyBfDFJrwumVxv8XbexgLhgzcJ7Zt64=' 
  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"
    }
  }
}