Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd907214782e840877b135091fd1a81c5fd7a9c3638df26a3e466d7b26b9edc64' 
  AND token = 'gK6TwtTUcg0RGz2kP5yOzOcAgHaravF8fdjjlODISuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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