SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '097341b1b7ebdd339b34c9cf326a2380fa5697835368b7078dad2a84f1d59151' 
  AND token = 'UZdHMDhvOypFPVObwk3yp/Tn4w28VWuN+Pzdqt9aTuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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