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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd09846c205d89e4c48a049f0f000109e23ab737c113942b31832add3f381994d' 
  AND token = 'ggOHU/pDNmwjunlFGENqlt/FelGBgu0jMUob9p+5NNM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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