SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e0a045c8089493d1d1bd7825f8f5969b960632f28d5b019f6b65753b939038ff' 
  AND token = 'ElawKGbYJ/xWpfa0iK+6c7v292//BA7wALX4g+2TYpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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