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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daedeceb333c636057d01e6665c1ca007e0a1cf9137de70f18bc3e8ac2ea66de' 
  AND token = 'wj8oga8aLp9hqJHkhsV0l7X4/5pbOmo0IwiSIfr8cio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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