Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52a71435608424cea1718005acd2b43327b02a5d6b32a05984d316cb9f304950' 
  AND token = 'YaeNJUkmxx7c0pu+W2JdVNEFwSbU3Q+BqNQM7UJWkbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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