Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'ffb9d76b1efce279892998c8c2f451c8d9b22cf25d2e13d6c8a257dbd31c8dd8' 
  AND token = 'xmW1Dwjr4NkgXuY6PqMda9tn8Q+YZy4k1SjIERYSroo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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