Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '035829aa00f61175ad6f3f5613d88aada02c059a53df920e7b1931278ec7821e' 
  AND token = 'K0tEWgApfsEcLGt8d6i7tcy4o4xnU35zEgkGXN9XC9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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