Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fab9f0fcebe87119b11b07cea1c82abfb912826d25ee2821b2996c160509c53d' 
  AND token = 'hJw+SUfe/hsGxCJCcXeeP4nJjIkf/fQtsq5h2j9BoKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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