Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee45cebe0ddcfa59c4081760e923e00a9dd64131473a0b705b344747729e802d' 
  AND token = 'b6ClOIGogyEOW92MBALkf5kikAhDm/ADAdI/NWrRvAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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