Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8faa1cd5419c6124953f4f86b65d36d66493c305223cc7c7b739bf325a0c2b5f' 
  AND token = 'nPLDM2FT81b6kS9eO7Jp1IN6c2UPtrd9tlQdmuGj7Kc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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