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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd82bb0019919d1f2a53973f3db356d706a77e843fc789480cc50d03b964b245c' 
  AND token = 'XakeSZ5u69hQ6t4+cx9uSwXVGWotxlu7NGBNDwGezho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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