Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '696c1819ae6a5f9eb92b456dcc029c3d49435cee05394eae0355f11b973b4104' 
  AND token = 'r2arAFvCk468RyrUS14z3qvTnNKzWPpS5TirhNnchvI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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