Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'd51328a42426f7573d0b2e44887c428d97faa3792c523acf3a4ee7fb904aedff' 
  AND token = 'ldwk4pSslxwHbxpH4vBJ8Z5VQLdG8Ob86ZaHbIXLDk4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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