Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b3f6022ebe3dc418d573ded2ef12a1bcbe092f3cf0513a1154ce10346ce57b7b' 
  AND token = 'XtdgBI5hr4B4IC20250ajzq1L4NmfQmUcuc9ABWbQMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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