Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f787e1666640ff3020f7228e617669e317b49fab516bcb039c0434483e397bb' 
  AND token = 'M92At6O/aEzFDWeosqEAcQzdfdgUMyrTeyTABTXMUgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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