Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11bcd487e82f8b20cc2507dcc3cb6b355762867c7279cb6b6568334a45110622' 
  AND token = 'bTqOPMbDOn+UPzDIGs+RtFqBToIIl3eo/BMipj9UOU4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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