Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5867e18a2bc70f41b644d8f05f720cadf838efca2fed6350f2e0d622f111d9b7' 
  AND token = 'SX5qo2eeukEWsr9UUBw7xpZ+OYYJO+CiKY/aIh1N5EY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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