Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b5e684ede92934dbfa45e53b246602b0bcd90c95b9c52c52d7ecb61830925d58' 
  AND token = 'Ezb3A7K109sKCSF5oRzjhmsiVTAkeHaRYw3q7+JVhMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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