Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a664d12c9e28faed1a13428b530c338eafe572054123fdd842499be71f68ea3' 
  AND token = 'V124onmgKAqJx7vIiaKUGJtqr6FuAet0+2WkyZ9EoyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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