Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5a14f4b334c68f1dc1435eb599b4395250c9d10b808b80e108f69a77074302b' 
  AND token = 'vw+x3JpMcqRFrERGrSoladVolFZ6kxpXiJ85+1lzEOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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