Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb62117d6b7cf980409885df44758701577667d67f43e2f184af7393fcb1cc8a' 
  AND token = 'LeFnXEpSrBSFoOoQSKhovQgYlfJYdTFQs4jc+nkh770=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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