Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f6e31ef80976f2b3ff63dcaf2cb9f439c8afc439564875862e8edeaf1074bdd' 
  AND token = 'Fq9nv2aT+tnX5x9rjtPtuQ86L3h6RwmiabfRBd5s568=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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