Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a32c8d1cd26d805f6c9fcdac32d7a78415999c6374a8253ad7d4abb251c71d98' 
  AND token = 'tqOjNedmPA7RTs69L7XVceCTcsglpwgg/FcWfYCgDL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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