SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '693467410d89151f9b5709325475501d0a85f40dc424b3191da902bf0ab35994' 
  AND token = 'D+ozsbmpu+VSCy0ZxdPpyDMG2Zw97KjqrWXSvfHldAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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