Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9347fe174a1dea4b56f63134a83bb73fcdcf345ee046fff48ce39c309856d675' 
  AND token = 'tDGlJTH0eaDLhVCZfgajZdUqIU9YP3S1vG9wqUqceTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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