Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89fa4e3de39b92a80580ce5b67845b0f6fe56886c3233351700585eff336ebaa' 
  AND token = 'Enkvjjgn7KC8SE1uu2+zQHN236y4bak7Z9Zy6CM9/vQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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