Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d7ab8554f152923f5153a59b5437ac8af9916bd9e68118d6bea2392a636caa9' 
  AND token = 'Y4LMNtx/3NKhsOylOBpM42xkJ+C3kiJL+uh9RvNCR6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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