Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a18d3e5cf95bb722279c4c161c5a2aa38a60f6756d998d2972a43818460fe06' 
  AND token = 'MV5V8m+SYyVMWBKkRM6Tg7u95i11WWs/eGRhWOIdRJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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