Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '744536023fdec88fede9544c32289acf550a931144c91b8a89ac5f598832cf44' 
  AND token = 'nCae4jlX9CPdWIIHb/0VEPTq9PNqTtiSBhnt+MgtPEM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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