Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '541ffb46f8ce1f6b490ce38174e1d6eb89eb8090ac9980ee1ccd8f27fd245118' 
  AND token = 'mc4vMesao3lJRJq+qWZHFjCvIzr4MTVNDD5Gzc3dxfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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