Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46c048934b47c641dd266cdd77c2f8ce2c05489c9cb240c7914f689b997f510a' 
  AND token = 'jo/uS4uRZzgxlzES3C63LEvu95YPlT0lY9UKiug88pw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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