Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4da6e803eef8ae6ea730a1107f9fe9e4f6744549aa35c771955ba63bee5b3fcf' 
  AND token = 'vd3SZjtdv47hJmhtFMVX+zcyUsSKQez1ay0uPdaByt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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