Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16d945aef90f8129d51e8ad9f73343d86920ecc36b9473d82253de6d7fad8985' 
  AND token = 'DihuonjAGabHThnxtDZDPO3bhpi5Q/mymU2RU2L/GTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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