Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56fc96edddfff46e256a24cb19222a35dd9d981ea60337d5bf11d552c2731f63' 
  AND token = 'vKIARroOa/xfCmP5Cr13t6X4a/Oeqb2Lx/oVtWirUbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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