Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6059476cff37a161dae0808ee10ab795eba355cc2dc96695cd11316805e4a198' 
  AND token = 'U1UKSUV9HYE0Uk1ysIb8cS3gAsNd+lf+AIYTWC6D8U4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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