Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3370ecb13d595f64d26209d659e8347c60b219f9664ab7011c1f0a78b4a4cbb3' 
  AND token = 'yqE4YDNR0lQ93RqoMarZzPq0paNmE7EjmzHisa5eRgo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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