Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd8475714d557857e676be7a0108fc0a7ea1d88f783a862bc7aaf169105a7cab' 
  AND token = '54tWqQGsZQ3Cka1/Eti2A+/oZzKHCnF5M+iPEQQuBv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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