Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1173eceae862a4c90d507bd347a3e1942006acf50fa6240810e286cd1663bb77' 
  AND token = '6AnL6t04xI14/qBWywdsN4w2L9KnUwmeCk6Qb5wMkxU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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