Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cadf97f0c407f6bbfb056db6de9f0a1759587bc0e3faf848828116c90f72597' 
  AND token = 'H2FVUebwyhxUe02mdVYXvFaeRGxaoGAaDT4Qp13T1O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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