Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a230f6ae5a04fc29bfb3b436823d36b23a04c8c069c1095dc67b74300420d0ad' 
  AND token = 'vl3tzOed+rZSPdg1JMmMEjrQ2E+WKffqThjPvVVuxsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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