Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '896a507b032761341eb05a7eacc434e14dc47ae3756ed4c10a166d4e5390f041' 
  AND token = 'N+pffpK7FXTA6oDIaJhJpRaKx/XITu2DEcEO++oc4+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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