Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17726f8b07d83ab5c843e180c1598e4ed71cb7ffbc6c1d6561dee625ed01db74' 
  AND token = 'uBJh5bY9iEi23x63Bs2J67EKtIxrKWu3JNiIRP3TZck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}