Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d3bed23ea1c60abda4faae3a0c330e5879a8c77b0b89ea1297f0c069813d8f4' 
  AND token = '5uOnBrMpmHEE/ymPeREnMcda0GRw7jzwKJn4enXBkmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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