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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a725cea7686e560bb346d59b4e230782daaf23fa25a0b0d48ce9f186066cf3d' 
  AND token = 'KRXOiaoJwSGD/I+pWpOBbxust0fb8Y6zY15gg6GlFfA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00088

JSON explain

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