Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6919ada92d7c73c850f43506eefb19907b52565886688bccc4be74dad03de272' 
  AND token = 'm60ByIzGJ2WFnDndo8r9QsMJ4C0Ht1a4VC1ZpAkBu9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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