Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b65edb8d1abcf69f34a43ae3164e5eb7916d3cac7a4de54c4d483859fcc9a46b' 
  AND token = 'RHcJPA3NeWQx8dgysPE2iYGzbaYiXSAfqJlZuoir7uI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}