Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bb6dcfe512fdbfb7b371679941ec15d08fd89782e5040c5e357571274c75347' 
  AND token = 'WGwm0kXulKPaDvmyose6GKBRCAWXSTxJWRkZq8D8T7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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