Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fb3271d45a035d57f5b97dcdeb8bd6fa15222473b87385c447f7155e8ae6ad6' 
  AND token = 'QvM181zSp71Aw5AnaXVnWKWKXUqnfP3TGRE95rlkWb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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