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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '322d8cad581ae492c16d0ad69da4322ae32e55de99380ec1754884adf3cf440d' 
  AND token = 'nMyH1k9zQvCflc/28iye/4ZrWcfjYrYj34ljHxG/LSE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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