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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2007ee5914791bf2d17810bf0b265b40721c781a27fdbda537a5ba4aea06433e' 
  AND token = 'NlIki0TEpbsjNpYBHmkLEd3JAFsAGcgm3Ulq9wbMnyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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