Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48a73c298f956b203464047a1f1c7302247e3ee89a706a72bdd6cacbf221596b' 
  AND token = 'LQw9o5dBy+SprZR9kmFV1TS27PCYI+RMEZJT5uNgBMI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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