Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b2bd180ecceeb6d215c8b4ac51d1f1f2491aa76a9e2d7aad800b09127cb8e67' 
  AND token = 'sj93JD4y3TOs4jO2Dy+gb6rwICunrJm7sofp+qFpueA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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