Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '483bdc2461137286b7e0221f688b8b7881cf25c7ec632ce39ee352107cf639ad' 
  AND token = 'l5P03XggbWGCginemtFWsswlHqBaObMw4bpSYZFwEbg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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