Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a3d3ddea18987ac4ff18196427a69eb2b2dba1436ab3069edfdad1b93a82e88' 
  AND token = 'aD25jwMbuKpB6icT2XYO1ORGAWb7DSAMW/MOvC58SYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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