Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73ec6f5839a9bae8f6c7b10af905afa970cceb7afa57ef6af8b303a29097af88' 
  AND token = 'T2yt4C1s4P++OmwuJ4fmKH+aDHseq0creh/q/lfYJ7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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