Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c3a45dab95a62b42939dc232420a762ab593bac23b37965d8d2cbcf57c082ab' 
  AND token = 'q4HdCk26tXsRwz69UQ0GMJbXQTUAXoyu6KuUVvm0978=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}