Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '08f4792340aad213696ca4040ffe2a655586f307003969eae508a90b3f18bf1f' 
  AND token = 'yslDxrKB65EP9720MdaCm5ggN/huuqxO4apfw15yTEo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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