Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '063f412614a24636fd8e3b08e5413fefbb7b9076aad0dec0388333e1849ad31d' 
  AND token = '+VuOjBglcOI1JlolITobUdKEC8ShSBOrjD9SlSbCl9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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