Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66e396c2813b7720815e5849c4972945514069b78f051fbb625fd2911752681c' 
  AND token = 'ntNBkhvZqJ9DJNN0hb1EM5Qwc26C4KUOGG6v4Rviro0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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