Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '823a1cedde577a69d5790207e4cda761f9747f5a3f1cb55bb79812950f011975' 
  AND token = 'zT1KAWu27MxnSYq+1dAY7R3xmULzqMdczUFf2mX/SN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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