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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '72e62ea59c499bab800256c5e0d05abbebb900f53b3823439fcbcf73bf386548' 
  AND token = 'sHAUGxRjPoZZ/kX9SuidVkHMoBcRmm9sG8eB1ba+f1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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