Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91eee006a8948ee67d8265fa15ec35577abdb1703c9f1578f33ad953ced43f13' 
  AND token = 'qXxXy2SHwIHlP2LlyN51jBNMcy5LbGN93IfZsbHGQ5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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