Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47eb801353c864ae923aa4c5e09c80cdc0322651eee4422581fd7758cfc44384' 
  AND token = 'LK8X32O2JpREvW5yFtrk0LbxKHP2hl5cYWUTUzfoJRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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