Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c073d746a1f2f56fc82cf9f19ef8a68a3f226a666f7b49308116bad022848a41' 
  AND token = 'sgbyRvjsdrvQIbLR1brXCc9M1Rq3C53zOTbAECdMwfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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