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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05246136035ff0023853111f222c5c4243494d99eccc23cd8e6ccda4a939855e' 
  AND token = 'F0UrtEu17wKGnHv5mpTzw+jVk8/zQXeqNAw99mcVx0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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