Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32379660026fc8a50ba2fc78c9ebd39dac2eea01769c765400925c4d5687ba10' 
  AND token = 'TOT/EgyLgbLkyyolyqk2vmCxq70W8NPOs3lNerjQwBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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