Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b738c150d5eeed7333790390b1af6b95dd340097c828cfda7e86417e795e3007' 
  AND token = 'cGbc4I+bY2641B+1u1gOWkB4HzuGmJGL5e5aTQoZN3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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