Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1b7a847218b5753cc49c372777fd6bbf8a05f9d1068d97e6f6c43d779a11baa' 
  AND token = 'eqM1AbhecBgMYMxqmMM92+EO0pKJfLxEqkHVeKY14fs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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