Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b9a09f8dd82314793f4b37f71989d622f8e6708953399f411343b516700c3923' 
  AND token = '8gw04GLxCp8pJx0DQjUSPj7eMy4+pRsGZzAMr7Mbr2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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