Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8cee0b9ad928d7000ab3a47412a7427ba05ded93c5ad7809d3bafcfdce4e5549' 
  AND token = '4KAcxooBTCA/iFkvP6OPzItQMWngH4ZPId9UI/HsXMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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