SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfeb2a12191ed3300b1448a1bdefb7ebaf34b66cbea9825d55d497e17da24978' 
  AND token = 'lbBhOwbPv/3ahADPBSSMoCJ6lWNI1rzF/8vkjgsKiVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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