Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edb90e7246e8375fbd76471a8168d4ec077442fc2049c25490424e41a42d719b' 
  AND token = '2BNiDqIfpAnIyOM7zjxzOmdYcNaf7be5xB4nKHbnR84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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