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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09aa450271d614ad6722ecc8ac8e1fd57355eeece1e1a4e8d6f97ab884516e38' 
  AND token = 'SjqYi6+utGOaYiOa3YT2bbdNk47jSfvTDbd4gjMVajk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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