SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95a803d4731083981a52541d34426d0fcd50369854228183577406fbd706cd52' 
  AND token = 'P+JnyhB23/GMmcS6e1CwRlrGFHMFiAvKfXzqfa8+MNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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