Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '741fbdaf02c142e25d7b6b7ef7151eae56665de3b3ccca556bbcbbc0768abee5' 
  AND token = 'LVNy4mN0ppOtIScIqsmoPICGh3FQ5V54MHZsWjbegAw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}