Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9c0d1664410c6c645bb1972f049d3b4955569cac73efb8021bb428f13605c8b' 
  AND token = '3pQVlayrvHXHdU985wnvG1vZw0FlLJ5gR4iegppZ2CE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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