SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ed2486d1d019ae080f14147b771a1999e3e7825b866723351f15ea707eea26a8' 
  AND token = '4EgivFgoZl3Ac+2cHJU7taYhWuYBpi9ZlIrjRw1kmg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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