Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd64ce6cbf4da9bab4863e4b8f1acb4c8733c272f7c87460e60143fce606d25e7' 
  AND token = '3Sz3p86Y5qUzCntZ19FBYyw+rkxk52E1EGVK9LHCnyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}