Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56b4919ebbe4bb7b03d3f7f0d866f1e61474c04cd553d43bf6a2f7914f453d76' 
  AND token = 'lG5XFxWGdopYa6e3LkzvSpnEM76ohTqLPSQVNSMPqDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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