Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a6e93787759a4ab118d79370e67fc71ed6743b4c7766932c132389b660115365' 
  AND token = 'irLqe5pUQ8DDbOu9y6DiEHZotB8yw8ss9gJZgTTW3nI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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