Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1da5fb8288093edc5a86d3885ec6752181aca7786010346344686a670c3593bb' 
  AND token = 'oLWCYh+4F96xSDX0oVnmA1gWUdO8NCpZk8+/lRapiO8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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