Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5f9036246e8c307802c5ede05d37fe04d23855bdd6ee73e42261398c05f260d' 
  AND token = 'lE1auCyCR2SLjPVw2/eM+sYHN0icvV5NY9wb16xkVX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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