Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39b76f42075394a07fb29913c087d59876d06b3f33ba72803bd772fb5971d246' 
  AND token = 'FlLRCEVCBn47IQ3DbmU7kGrbz9X4j05q6ZtaEPE2C7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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