Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1831e288ef54bc0939770cedb92ab42e76421574d7014d7078f16522e19e3fd0' 
  AND token = 'iOYikmu4lYbDSau1nDffCm4snNPxyf+tuEyGt2D5Cg8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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