Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '343edc984174a092556f2cbd076712dcb71500cc8936adf1823594a8115511ae' 
  AND token = 'T+W3KaM+c+wIBWJ5J5HnE+vHoHCTr38bu79Oj3UU7nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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