Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bf04a8b46e129d1cc67a34b55aade748da4b36da40a3d861530f64c4064574c' 
  AND token = 'dhqWODWqg88w5LbFF13bYQsWBbxF0YrbPGnOqpxrQs4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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