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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44eef0bfbf825f17ac9abdaf0cbc7b62fccef84cc854e8627fe2ded67d7332f7' 
  AND token = 'Tydj0B1yT240+jYOIj+FS501kGxv7o7lS+ZmzpS/Yec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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