Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '940fd2f783c6a503f3d2b0fef3b7286969d68bcd74897e080e6510713aef339e' 
  AND token = 'dQE/B9DYoOPXI/vPeBa1N9fsek/5KR8D7zvvqAj1Sqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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