Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac72ec9d673424a78ec71527a65547e0f936f3eef995193362ba0d32534fc887' 
  AND token = 'SNbTiY+8LeNgr7JQ7zgCQ7AakVN+chyc9FsunAnZJ80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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