Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a2aaea29f8b561408a22d33aa6ae6a4357da88cc5a94f4dc074a97f86ab3133a' 
  AND token = 'B0jw0SKinsvzA/ooYnMCrzHsrW0HqL2jffo2CqlAOos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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