Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '871f240b1d932df70ce205cc932c57509d67233d4dc1005c2e7867b064a75763' 
  AND token = 'K0aiDmHqMX52vOXiIC5Wxpf7qAJ8M6KrVeAX0OVZQys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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