SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'faeae38287f99f5783cb0b4e332abd0a30f0b8582b0abc79ee1266678efc40ee' 
  AND token = 'mSn4FNULGwQNPEU/hlZUrVJD+vXLMn8xZpUqT8QZs68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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