Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f6e4461e990a66ef674439633e425010f0e572b62b3c803508cf6c2e976de7d' 
  AND token = 'pkKjKS1nNzzITckvAVY5VcY4KpLcTcvTYHYGgVuBwII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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