Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee04706b4dab3fbc986e9c0e99bdfcd735ad779f0409a8d3a5edf912b44f6b15' 
  AND token = 'JNKm/Q3cddEgNZirCYR9jrsEOGon/bkZzb/eBoPg8U0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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