Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b03583e01b5bbb17db4ec8570b2e83561ec5bee00982154d154475bee06a7e6' 
  AND token = 'QqBAmaiAh3QAtF7DM1dTUd+GJpfdhnS+Ydd9J8K7bes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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