Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7853e95309cc595d0ecd028de8bb37c7ba2ec131932d77a18afbe81dee880d20' 
  AND token = 'axFM9CzSHZvbUngXmdYce0n7xrRWWITK6OmfO/c9nj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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