Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aededa0a73869442021ffda4474d32ed1eb59cfa3a96da9d520e44e6b8b17884' 
  AND token = 'IPPcOCgdgRkmkWOK75KomuC4QIjkFKeL1qtZXZr5SDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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